Manufacture of imitation-stone blocks.



J. MITATS. MANUFACTURE OF IMITATION STONE BLOCKS.

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978,617. Patented Dec.13,1910.

J of ladle for pouring the fluid com ound "ED STATES 'TPATENT carton.

J'ACINTO MITATS, OF NEW YORK, N. Y., ASSIGNOR TO MIT ATS MARBLE MANUFACTUR- ING COMPANY, A CORPORATION OF NEW YORK.

MANUFACTURE OF IMITA'IION-STONE BLOCKS.

To all whom it may oe Mom! Be itknown that I, JACIN'IO MrrA'rs, a

subject of His Majesty, the King of S in,

residing at New York, 1n the county of ew York and State of New York, have invented certain new' anduseful Improvements in the Manufacture of Imitation-Stone "Blocks;

- the art to which it use the same.

and I do hereb declare the followin to be a full, clear, and exact description ot the invention, such as will enable others skilled in appertains to make and My present invention relates to the manufacture of imitation stone blocks and especially to the manufacture of'cement blocks having an' imitationmarbie face, and the invention relatesto the process for the manu-. facture of said blocks and to the product resulting from said process.

My invention Wlll be more clearly understood after reference to the accompanying drawings in which the same parts are indicated by the "same letters throughout the several views. 5

Figure 1 shows diagrammatically a press .and one of theimitation stone blocks being compressed therein; Fig. 2 is a perspective view of one of the blocks with the imitation marble face upward, or in the reverse position from that shown in Fig. v1; Fig. 3 shows a section through the block of Fig. 2 on an enlarged scale along the broken line w-w of said sagure; Fig. 4 shows two of the blocks pres back to back to form a double faced block, and Fig. 5, shows the preferred form between whichtwo plungers the plastic materi'al D is. compressed.

,E represents the ladle, which is preferably provided' with a lurality of partitions e, a spoute., and a andle e This constructlon forms a compound ladle, as described and claimed in my application, Se-

rial Number-562,988, filed May 23, 1910, and entitled Compound ladles.

In carryingout the process-two or more separate vats are supplied with a fluid mass comprising about one part of marble dust to two parts of cement, and suflicient water to Specification of Letters Patent.

, Application filed June 11, 1910. Serial No. 566,429.

make the same fluid enough to pour freely.

Into one or all of these vats a suitable coloring mixture or mixtures are added, just for instance, if it is desired to make a black and white imitation marble face on the block, one of the vats containing the white marble solution is not colored while the other has lamp black stirred into it. These different colored fluids are oured into the diflerent com artments of t e'compound -ladle in a flui state and are then poured into the bottom of the mold forming a thin layer. The top of the plunger which closes the bottom of the mold is preferably greased before" hand to prevent the adhesion of the plastic material thereto. 1

Patented Dec. 13, 1910.-

In pouringthefluid into the mold, the

mottled effect is secured by vibrating the compound ladle while the fluid passes from the spout. If desired, the various colored iids may be poured into opposite sides of 't e same pocket of the ladle, thus producing sired. This layer will rest on top of the fluid mass below, and above this is athicker layer 3, of mixed cement and sand, slightly moistened, preferably about one part of sandto three of cement. The lines t and'5, see Fig. 3, are supposed to represent the top of the layer 1 and of the layer 2, respectively. But the line 5 would not appear in the com pleted product and the line 4 would be indistinct After the three layers are in the position showndll Fig. 1, a heavy pressure" is applied to both plunger's and the layer 2 of dry cement and sand will absorb moisture from the fluid material andform a weld be tween the fluid bottom layer and the moistened upper layer, and the result willbe a block with acement backing and an imitation marble bottom layer. This block is removed from the mold in. any convenient way and left to harden. In, about four or five hours the cement will set.

By varying therelative thickness of the bottom layer and the upper layers, the marpurpose stated.

polish-it will take and the artistic eifect se- Patent f-from the United 1. Thelierein described process-of manufactpre' of imitation .ston'e blocks, which tively thinner .or thicker, as desired.

,. of the block. Moreover, the proportions of .in the rough backing may be varied within may be accomplished in the herein described blocks singly as before described, and then before the cement has set and while it is'still .The' backs of the two blocks wi'lladhere,

ile l have shown a cylindrical block of any shape desired.

' stone may be substituted-for marble since ble face of the block may be made com arardinarily. the backing should preferably be about twice thethicknessof the smooth face the ingredients in the smooth front face. and

certain limits according to the product desired, Without departing from the spirit of my invention.

Frequently it is desirable to have a block with polished faceson opposite sides. This process and apparatus by forming two moist, placing the block withdrawn from the mold back down-{on top of the block still in the: mold,and applying pressure as before.

forming a weld, and the two polishedfaces will remain outward forming a double faced block with a cement and sandcore, as shown in Fig. 5. i

and a round mold for maklng the same, it will be obvious that the blocks may be made While I have shown the mold only diagrammatically, it willbe obvious that any suitable'form of mold may be used forthe v By using the compound ladle as de'- scribed, a highly artistic striated or mottled face dmay be obtained. This face is susceptible of a high polish if 'such'be desired or the block may be used just as'it comes from the mold, after,'of cou'rs'e, the required hardening through exposure 'to the air. f In the herein described process'and product, I preferably use-pulverized marble, or marble" dust, since this. not onlyxadheres to the cement, but it also has the property of setting of itself under the influence of mois-o ture-and atmospheric air. Pulverized lime that will set like thevmarble, but I prefert'o use'pulver'ize'd marble on account ofthe fi'ne cured. It will also be noted that finely crushed stone or gravel may be used as an ingredient of the upper layer 3,, but I, preferably, use a mixture of 'co'aifse sandand cement in both layers 2 and I I have not shown anymeansfor rem OV- I my invention what; I. claim and desire-to secure by Lettersstantially as described.

consists in pouring into a inold a fluid layer of pulverizedmarble, cement, and water,

well mixed; inplacing above said fluid layer a dry mixture of sand and cement; in placin above this drylayer another layer of san and cement slightly moistened; and in applying heavy pressure to the mass, whereby the dry layer forms a weld between the fluid layer below and the ;moistened :layer above, and infurther applying a similar block before the cement down to the formed block still in the moldas set back and compressing the two together, substantially as described.

2. The herei of striped streams ofa fluid material of round stone, cement and water,well mixed, t ereby forming a 'parti-colored fluid. layer;

"in placing above said fluid layer a dry mixture of sand and cement; in lacing above thisdry layer another layer o sand and cement slightly moistened; and in applying heavy pressure to the mass whereby the dry layer forms a weld between the fluid layer below and-the moistened layer above, sub- 3. The herein described process of'manudescribed process .of'manu- -facture of imitation stone blocks which consists in pouring-into a mold a plural ty 780 facture of imitation stone blocks; which consists in pouring into a mold afluid layer of pulveriaed marble, cement, and water, well mixed; inplacing above said fluid;

layer a dry mixture of sand and cement; in

placing above thisdry layer another layer of sand and cement slightly moistened; and

in applying heavy pressure to the mass,

whereby the dry layer" forms a weld be-v tween the fluid layer below and the moistened layerabove, substantially as described.

- 4. An imitation stone block v manufactured by the herein described process of manufacture. of imitation stone blocks,

layer of pulverized marble, cement, and water, well mixed; in placing above saidfluid layer a dry mixture of sand and cement gin pnlf-acing above-this [dry layer another layer 0 and in applyingheavyfpressure to'the mass,

sand and cement, slightly moistened;

whereby the dry layer orms a' weld between the fluid: layer below. and the moistened layer above; and in further. applying a 1 v similar block before the cement-has set back do we -Witnesses:- a

Moses- ELY,. Josnrn S.-'Hm'rr,

,- noinro mums,

which consists in pouring into a mold a fluid Y 

